Purchasing guides
Taiwan eGUI invoices

Taiwan eGui invoices

What is an eGUI tax invoice?

The eGUI tax invoice is a legal certificate issued when a business sells goods or services to a buyer.  The eGUI is one type of tax invoice issued, transmitted or received through Internet or other electronic methods. 

What is the difference between a “Business” eGUI tax invoice and an “Individual” eGUI tax invoice?

The “Business” eGUI is issued with the buyers’ business registration number, and can be used for accounting purposes as a tax certificate.

The “Individual” eGUI will not be issued with the buyers’ business registration number, but it does qualify for lottery.

Business example

Individual example

When and how will I receive the eGUI tax invoice issuance?

The eGUI tax invoice is issued after payment is completed or goods are delivered.  

The “Business” eGUI will be sent by email from Gateweb, TI's 3rd party vendor supporting local invoicing in Taiwan (@service.gwis.com.tw) with a PDF attachment of the tax invoice.  You should receive the email within 7 days of placing your order.

Alternatively, you can look up the invoice on the Ministry of Finance E-Invoice Platform.

If you checked out and requested an “Individual” eGUI tax invoice you should receive an email with the information about your order within 48 hours after placing your order.  You may choose to store your “Individual” eGUI tax invoice in the Gateweb member carrier from the "eGUI inquiry" link in the notification email.

What information is listed in eGUI tax invoice?

Product description unit price, quantity, subtotal, total sales amounts, tax amounts, total amounts after tax and any additional charges such as shipping costs, Custom reel or Date code selection during checkout.

How do I obtain an updated eGUI tax invoice if a refund is issued?

If a return or refund has been granted, the “Business” eGUI refund allowance certificate will be issued and uploaded to Ministry of Finance E-invoice Platform for inquiry. 

The "Individual" eGUI tax invoice will not be automatically sent to you via email or available in Gateweb member carrier website. Please contact TI customer service center to obtain a copy if needed. 

Our refund policy is located in this FAQ.

How do I claim the prize for "Individual" eGUI tax invoice lottery?

You will be notified via email.  If the eGUI tax invoice is stored in Gateweb member carrier, you can print out the certified copy of invoice from ibon kiosk in 7-ELEVEN convenience store.  Please refer to "ibon eGUI tax invoice printing procedure".

What I could do if I do not receive the “Business” or “Individual” eGUI tax invoice email?

Please avoid using free email domain (@yahoo, @gmail) to prevent email delivery issues. If you are using qualified email domain, please check the junk email box in case it is wrongly blocked.

The email sender is noreply@service.gwis.com.tw. To ensure the delivery success, you could add it to the email whitelist in advance.

If you still need help, please contact TI customer service center.

What can I do if the Gateweb member carrier site is not opening when I chose to store my tax invoice as an “individual”?

If you have issue opening the Gateweb link in the mail, please try again using a browser other than IE.

What is Texas Instruments eGUI Tax ID number?

Your order will be placed with below vendor.



GUI Tax ID Number: 33405832